CN104912583B - Portable jet blower combination fume extractor and its method in tunnel - Google Patents
Portable jet blower combination fume extractor and its method in tunnel Download PDFInfo
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- CN104912583B CN104912583B CN201510391662.0A CN201510391662A CN104912583B CN 104912583 B CN104912583 B CN 104912583B CN 201510391662 A CN201510391662 A CN 201510391662A CN 104912583 B CN104912583 B CN 104912583B
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Abstract
The present invention proposes portable jet blower combination fume extractor and its method in a kind of tunnel, pass through two portable jet blowers apart from ground different height, to form a kind of longitudinal fume extractor, two equal horizontal sextant angles of jet blower, its air outlet is arranged on same cross section, main air blower is aligned on burning things which may cause a fire disaster longitudinal surface, secondary wind turbine layout is in main air blower side.The device can not only prevent flue gas adverse current and smoke evacuation, and can guarantee that the stability in flow field around jet blower.Operation is flexible in addition, mobility strong, can be widely applied to the rescue site of tunnel fire hazard.
Description
Technical field
The technical field of blower fan system design in being rescued the invention belongs to tunnel fire hazard, more particularly to moved in a kind of tunnel
Formula jet blower combines fume extractor and its method.
Background technology
With gradually increasing for highway in China tunnel construction quantity, the fire safety evaluating problem in tunnel is increasingly by weight
Depending on.Because tunnel typically has relative closure, distance, the features such as few is exported, concrete on fire occurs inside it, to tunnel structure
It can damage, it is often more important that to coming and going, Vehicle And Personnel's life security therein constitutes a serious threat.Caused by fire
Flue gas has high temperature, toxicity, while reduces the harm such as visibility, in the long and narrow space particularly in tunnel, can to fall into
The safe escape of scene of fire personnel causes greatly to hinder, and is also unfavorable for fire fighter in addition and is rescued in real time.Therefore, in tunnel
It is reasonably necessary that road fire rescue scene, which has a kind of effective smoke evacuation system,.
Tunnel smoke evacuation can substantially be divided into transverse direction, half horizontal and vertical grade fume exhausting type, wherein longitudinal mode is in tunnel
Interior generation longitudinal air flow reaches the purpose of smoke evacuation, and jet blower is because of its low cost, and easy for installation, Piston Action Wind utilizing status is good
The advantages that, it is a kind of longitudinal fume exhausting type being widely used in tunnel smoke evacuation.Jet blower operation principle is to pass through afterbody
Draw air into, projected after the impeller that high speed rotates accelerates, then by head, however, single jet blower is near blower fan
Flow field disorder is easily caused, such as system design or misoperation, effective smoke discharging effect may not reached.
Jet blower is fixed on a motor vehicle that can move freely, and can adjust blower fan and fire according to actual conditions
The distance in source, and the horizontal sextant angle of blower fan.This portable fan is gradually provided in the fire department in China, mainly should
Discharged fume for tunnel fire hazard, its operation can be played flexibly, the advantage such as strong adaptability.Correspondingly, this portable fan is in tunnel
During being discharged fume inside road, the disorder in flow field near blower fan can be caused on startup, can influence smoke discharging effect, it is impossible to and
When be that good evacuation and rescue environment are created in scene of fire.Therefore, it is necessary to which designing one kind is directed to this portable jet
The smoke evacuation system and method for blower fan, avoid disorderly phenomenon caused by blower fan stream field.
The content of the invention
It is an object of the invention to propose it is a kind of apply tunnel fire hazard rescue in optimize portable jet blower combination
Fume extractor and method, weaken or avoid reaching expected to the disorderly phenomenon caused by flow field around in blower fan start-up course
Smoke discharging effect.
To achieve the above object, can be achieved through the following technical solutions：Portable jet blower group in a kind of tunnel
Fume extractor is closed, the device is made up of two portable jet blowers apart from ground different height, as main air blower and time wind
Machine, the position of main air blower is higher, and the position of secondary blower fan is relatively low, and blower fan is each attached on motor vehicle, and motor vehicle is truck conspicuity marking
Or cyclecar, the horizontal air draft of two Fans, air outlet are arranged on same cross section, main air blower face fire location,
Secondary wind turbine layout is in main air blower side.
The present invention additionally provides portable jet blower combination smoke exhaust method in a kind of tunnel, using being moved in above-mentioned tunnel
Dynamic formula jet blower combines fume extractor, as follows the step of the smoke exhaust method：
Step (1), first according to tunnel fire hazard scene actual conditions, it is determined that the direction longitudinally discharged fume；
Step (2), it will lead, secondary jet blower is slowly moved in tunnel at visibility acceptable scope；
Step (3), master being kept, secondary blower fan is on same cross section, equal horizontal sextant angle, main air blower alignment fire location, and
And then secondary blower fan opens blower fan simultaneously close to main air blower side；
Step (4), master, secondary blower fan gradually move to burning things which may cause a fire disaster direction, carry out longitudinal smoke evacuation.
The principle of the present invention is：
A kind of longitudinal fume extractor is provided, including two the portable jet blower apart from ground different height, for main wind
Machine (position is higher) and time blower fan (position is relatively low), main air blower primary and foremost purpose are to prevent flue gas adverse current and smoke evacuation, secondary blower fan primary
Purpose is to weaken main air blower because flow field caused by afterbody air-breathing is disorderly.The equal keep level angle of two jet blowers, its air-out
Mouth is arranged on same cross section.After situations such as further clear and definite fire scale and fire location, main air blower is arranged in fire
On the longitudinal cross-section of source, secondary blower fan is arranged in main air blower side according to actual conditions, and two jet blowers start simultaneously, progressively to
Before be advanced at burning things which may cause a fire disaster suitable distance.
The present invention has advantages below：
(1), present invention ensures that around jet blower flow field stability；
(2), replicability of the present invention is strong, can be widely used in the rescue site of tunnel fire hazard；
(3), present invention operation is flexible, mobility strong.
Brief description of the drawings
Fig. 1 is schematic layout pattern of the portable fan on tunnel cross sectional.Wherein 1 is main jet blower, and 2 be time jet
Blower fan, 3 be truck conspicuity marking, and 4 be motor vehicle, can be truck conspicuity marking or cyclecar, 5 be manway, and 6 be tunnel
Gauge contoured surface, 7 be tunnel lubrication groove profile surface.
Fig. 2 is portable fan schematic layout pattern on tunnel vertical view face.Wherein 1 is main jet blower, and 2 be time jet wind
Machine, 3 be burning things which may cause a fire disaster, and 4 be tunnel wall.
Embodiment
Embodiment 1
As depicted in figs. 1 and 2, portable jet blower combination fume extractor in a kind of tunnel of the present embodiment, it includes
Main portable jet blower 1, secondary portable jet blower 2.Main air blower 1 is used for smoke evacuation in tunnel and prevents flue gas adverse current, secondary wind
Machine 2 is lower compared to the vertical height of main air blower 1, is mainly used in weakening or eliminates blower fan 1 because of the flow field caused by air-breathing
Interference, it secondly can also increase the jet intensity of combined fan system, contribute to air longitudinal flow, reach faster and better row
Cigarette effect.
In Fig. 1,1 is main jet blower, and with air-blower control room homonymy, personnel easy to operation operate to blower fan in real time,
Including controlled wind speed, angle etc..In Fig. 2,2 be time jet blower, positioned at main air blower side, remains no greater than 1m's with main air blower
Horizontal range.
Embodiment 2
Portable jet blower combination fume extractor, main air blower are opened simultaneously with time blower fan in a kind of tunnel of the present embodiment
Open.Other guide is same as Example 1.
Embodiment 3
Portable jet blower combination fume extractor, the long 1.5m of power stream blower fan, internal diameter in a kind of tunnel of the present embodiment
0.8m, on truck conspicuity marking, circle center distance ground level is 2.75m during horizontal sextant angle.The secondary long 1.2m of jet blower, it is interior
Footpath 0.7m, can be Miniature remote control motor vehicle on cyclecar, circle center distance ground level is during horizontal sextant angle
1.7m。
Embodiment 4
In the present embodiment, using when portable jet blower combines fume extractor in tunnel, following steps are taken：
Step 1, first according to tunnel fire hazard scene actual conditions, it is determined that the direction longitudinally discharged fume；
Step 2, it will lead, secondary jet blower is slowly moved in tunnel at visibility acceptable scope；
Step 3, master being kept, secondary blower fan is on same cross section, equal horizontal sextant angle, main air blower alignment fire location, and
Then secondary blower fan opens blower fan simultaneously close to main air blower side；
Step 4, master, secondary blower fan gradually move to burning things which may cause a fire disaster direction, carry out longitudinal smoke evacuation.
Claims (1)
1. portable jet blower combination smoke exhaust method in a kind of tunnel, utilize portable jet blower combination smoke evacuation dress in tunnel
Put, the device is made up of two portable jet blowers apart from ground different height, as main air blower and time blower fan, main air blower
Position it is higher, the position of secondary blower fan is relatively low, and blower fan is each attached on motor vehicle, and motor vehicle is truck conspicuity marking or equipment of small motor
Car, the horizontal air draft of two Fans, air outlet are arranged on same cross section, main air blower face fire location, secondary wind turbine layout
In main air blower side；Portable jet blower combination fume extractor ensure that the stabilization in flow field around jet blower in the tunnel
Property；Power stream blower fan long 1.5m, internal diameter 0.8m, on truck conspicuity marking, circle center distance ground level is during horizontal sextant angle
2.75m, the secondary long 1.2m of jet blower, internal diameter 0.7m, on cyclecar, circle center distance ground level during horizontal sextant angle
For 1.7m, it is characterised in that：The step of smoke exhaust method, is as follows：
Step (1), first according to tunnel fire hazard scene actual conditions, it is determined that the direction longitudinally discharged fume；
Step (2), it will lead, secondary jet blower is slowly moved in tunnel at visibility acceptable scope；
Step (3), master is kept, secondary blower fan is on same cross section, equal horizontal sextant angle, main air blower alignment fire location, and secondary
Then blower fan opens blower fan simultaneously close to main air blower side；
Step (4), master, secondary blower fan gradually move to burning things which may cause a fire disaster direction, carry out longitudinal smoke evacuation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510391662.0A CN104912583B (en) | 2015-07-02 | 2015-07-02 | Portable jet blower combination fume extractor and its method in tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510391662.0A CN104912583B (en) | 2015-07-02 | 2015-07-02 | Portable jet blower combination fume extractor and its method in tunnel |
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| Publication Number | Publication Date |
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| CN104912583A CN104912583A (en) | 2015-09-16 |
| CN104912583B true CN104912583B (en) | 2017-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510391662.0A Active CN104912583B (en) | 2015-07-02 | 2015-07-02 | Portable jet blower combination fume extractor and its method in tunnel |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2701900C2 (en) * | 2018-01-10 | 2019-10-03 | Федеральное государственное бюджетное учреждение науки Институт горного дела им. Н.А. Чинакала Сибирского отделения Российской академии наук | Method of coal lava ventilation |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2468858Y (en) * | 2001-03-07 | 2002-01-02 | 黄远绥 | Railway channel running type vetilation vehicle |
| CN1888396B (en) * | 2006-07-21 | 2010-06-16 | 中铁十七局集团有限公司 | Moving air curtain type smoke and dust removing method and apparatus thereof |
| CN104153805B (en) * | 2014-07-31 | 2016-07-27 | 上海市城市建设设计研究总院 | Smoke exhaust method in tunnel |
| CN204312112U (en) * | 2014-12-09 | 2015-05-06 | 广东省长大公路工程有限公司 | A kind of moveable tunnel road surface construction ventilation installation |
| CN204754966U (en) * | 2015-07-02 | 2015-11-11 | 中国科学技术大学 | Portable efflux fan combination fume extractor in tunnel |
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| CN104912583A (en) | 2015-09-16 |
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